Home / 2,741.20-3,781.48-1,621.60

Finding the Fourth Proportional to 2,741.20, 3,781.48 and 1,621.60

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Solution

The fourth proportional to 2,741.20, 3,781.48 and 1,621.60 is: 2,236.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,741.20 : 3,781.48 = 1,621.60 : x
  2. Step 2: Convert to fraction form
    2,741.20/3,781.48 = 1,621.60/x
  3. Step 3: Cross multiply
    2,741.20x = 3,781.48 × 1,621.60
  4. Step 4: Simplify right side
    2,741.20x = 6,132,047.97
  5. Step 5: Solve for x
    x = 6,132,047.97/2,741.20
  6. Step 6: Final answer
    x = 2,236.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.